views:
The long diameter ratio of the ball mill is related to the production method. For the milling of the production system, in order to ensure the fineness of the product, the long diameter ratio L / D \u003d 3.5-6; the mill of the circle flow production system is added L / D \u003d 2.5-3.5 should be selected for large materials. The number of warehouses in the mill is generally 2-4 warehouse, and the long diameter is bigger, the more the number of warehouse is more. According to the production practical experience, the general dry circle flow production mill; when the double warehouse grinds, the first warehouse is 30% -40%, the second warehouse is full 60% -70 %; When three coarse grinding, the first warehouse is 25% -30% of the total length, the total length of 25% -30%, the third warehouse is 45% -50%. . For the milling production, the fine mill should increase the length. This is also the case when producing high-strength grades, which is to increase the fine grinding time of the material to achieve fineness requirements. In the form of a grinder, the number and size of the bullings are appropriate. If the number of bits is not much, the size is too small, the effective ventilation area of \u200b\u200bthe barial board is small, which increases the wind resistance, and materials The flow rate is also affected. If the number of bits is too much or too large, the strength of the barrier board is not enough, and the coarse particles are easily entered the next position, the load is heavier, and each of the cooperation is lost. The material in the ball mill is also related to the type, specification, grade assay and filling rate of the grinding body. Therefore, it must be selected correctly.
